On 28/08/13 11:17, Jörn Nettingsmeier wrote:
On 08/25/2013 10:33 PM, Adrian Knoth wrote:
On Fri, Aug 23, 2013 at 12:48:22PM +0100, Chris Goddard wrote:
Hi Adrian
Hi!
Let me CC Robin and LAD on this one.
Hope you don't mind me contacting you directly, but I have a
question regarding the RME TCO option and how it is supposed to
work. I saw your name on some ALSA commits relating to the TCO
recently and thought you would at least be the right person to start
by asking.
The TCO can read ltc, but once it has done that how does it
communicate that time information tothe user space ? If I was, say,
running Ardour and wanted it to chase this ltc what would Ardour
need to do to make use of it ?
can't say how you get at the TCO input, but thanks to robin's recent
work, ardour can chase an incoming smpte ltc signal. it is just
another audio signal, connected to ardour's ltc input port.
fwiw, you don't need a TCO to chase LTC at all. the TCO is interesting
if you want to generate LTC in hardware, or if you want to _sync_ to
LTC, i.e. recover a clock signal from it.
Right, and I was involved with Robin in adding that capability to
Ardour. But, this doesn't help with something like an RME MADI card,
that doesn't have any analogue inputs, where do you inject the LTC ? I
also think the offloading of the processing of the LTC would be useful.
--
Cheers
Chris
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